<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form th:action="@{/testNull}">
	输入类型<input type="text" name="a_type"/>
	<input type="submit" value="提交"/>
</form>

<form th:action="@{/testTrans}">
	输入类型<input type="text" name="a_type"/>
	<input type="submit" value="试试能不能转跳"/>
</form>
</body>
</html>